CN2160308Y - Safety controller for opening or closing cover of pressure-cooker - Google Patents

Abstract

The utility model discloses a safety controlling device for the opening-closing cover of a pressure cooker. The utility model is composed of a multi-purpose safety valve and a locking mechanism, wherein, the multi-purpose safety valve is composed of an external sleeve, an internal sleeve and a plunger piston; the cross bores of the external sleeve and the internal sleeve can be opposite to each other or be dislocated under the function of a torsional spring so that the space in the cooker is communicated with or isolated from the atmosphere through a gap; the dislocation of the external sleeve and the internal sleeve is realized through the interaction of a positioning plate which is fixed on the internal sleeve and a projection on the body of the cooker. The utility model has the advantages that when the cover of the cooker is not closed completely, pressure is not raised; once the cover of the cooker is closed completely, the pressure is raised immediately, which has a first-level function of safety. The utility model is an ideal safety controlling device for the opening-closing cover of a pressure cooker at present.

Description

Safety controller for opening or closing cover of pressure-cooker

The utility model relates to the safety control of a kind of safety device of pressure cooker, particularly a kind of pressure cooker open and close cover.

Chinese patent CN20763744 discloses a kind of cover closing and opening safety device for pressure cooker.It is by the safety multi-purpose valve on the pot cover, is installed in leverage in the upper handle and the groove on the lower handle constitutes, the safety multi-purpose valve then is to be made of valve pocket, valve rod and valve plug etc., gappedly between valve rod and the valve pocket communicate with atmosphere, valve rod heart portion has vertical core and cross-drilled hole to communicate with atmosphere, valve plug heart portion has vertical core to communicate with the vertical core of valve rod heart portion, valve plug vertical core and valve rod vertical core connecting portion have fuse sheet, on valve plug external diameter and the valve pocket raised head face in opposite directions sealing ring are arranged.Do not close up fully when being heated at pot body, pot cover, valve rod by the lever upper end compressed can not on move, sealing ring does not have sealing function, steam discharges by the gap, can not boost in the pot.When pot cover closed up fully with a pot body, valve rod was moved on the steam pressure jack-up, caused the lever lower ends downward to embed in the groove of lower handle, as long as the interior steam of pot is arranged did not finish, and valve rod just can not fall, and forms self-locking; Pressure is eliminated, and valve rod and lever all lean on gravity fall, deviate from groove, can open pot cover.Malfunctioning when pressure limiting valve, fuse sheet was broken through when pot inner pressure reached 160～240KPa, and steam plays the flame-arrester vent plug effect from vertical core and cross-drilled hole discharging release.These measures have been avoided pot cover not close getting togather, or pot inner pressure is not eliminated the generation of opening pot cover and the malfunctioning unsafe conditions that produces of pressure limiting valve.

But in use there is obvious defects in the safety control of this pressure cooker open and close cover.One, the user can't distinguish whether high-pressure pot cover closes and be incorporated into the position, influence consumer's normal use.Because what the multifunctional safety valve of this pressure cooker folding lid safety control adopted is the gap venting, pot cover closes and closes when not in place, and the gap venting is not boosted, and the consumer can align pot cover closes and be incorporated into the position; Whether when the pass was incorporated into, pot inner pressure only acquires a certain degree could be with valve rod jack-up, and it is airtight with valve pocket to drive sealing ring, therefore still had the gap venting in a period of time, make the consumer be unable to recognize pot cover to be closed and get togather, cause use go up inconvenient.Its two, the motion of the leverage of this patent is that the weight by lever upper end tup part realizes rising and falling, and reaches the locking purpose.This has suitable precision and flexibility when requiring lever processing and assembling, also relates to the horizontality that pressure cooker is placed when using.These factors all may influence the normal activity of this device lever.As, unintentionally the pot body is put inclination, can directly influence rising and falling of lever, the pressure that valve rod is born becomes big, or occurs not having the phenomenon of pressing the pot cover of not opening.Its three, after the fuse sheet of valve plug vertical core and valve rod vertical core connecting portion is melted, need to change again, lay new fuse sheet and could use, cumbersome.

The purpose of this utility model mainly provides a kind of pot cover and closes to close and not in placely do not boost, in case put the pressure cooker folding safety control that boosts immediately in place.

Another purpose of the present utility model provides a kind of locking mechanism and not influenced by pressure cooker placement situation, locks the safety control of pressure cooker folding freely.

The 3rd purpose of the present utility model provides a kind of when pressure limiting valve is malfunctioning, can serve as pressure limiting valve automatically, and need not to use the pressure cooker folding safety control of fuse sheet.

Goal of the invention of the present utility model is achieved in that on the basis of prior art, adopts by what can be upper and lower mobile plunger and the interior cover that can misplace relatively and overcoat were formed and uses easing valve more.Dislocation is to be separately fixed at the inside and outside torsion spring that puts by two ends to realize.Inside and outside putting has cross-drilled hole, do not have at torsion spring under the situation of moment of torsion, and the two communicates, and is communicated with atmosphere with gap between the plunger by interior cover.Fix a location-plate by putting in being enclosed within outward, the other end of location-plate can be under the effect that the pot body is given prominence to, overcoat cross-drilled hole dislocation in making.Close when not in place when pot cover closes, under the effect of torsion spring, a space communicates with atmosphere by cross-drilled hole and gap in the pot, is in the pressure release state; When pot cover closes when being incorporated into, location-plate touches the outstanding of pot body, cover rotates in making, inside and outside cover cross-drilled hole dislocation, make pot interior space and space outerpace isolated, heating can be boosted immediately in the pot, because the pot inner pressure deficiency, causes the close tight and steam bleeding phenomenon that produces of plunger envelope when having avoided prior art to be incorporated in the pass.

In addition, the utility model adopts by connecting plate, the locking mechanism that check lock lever and reed are formed.The central part of connecting plate is fixed in the upper handle by the activity locking, its end is fixed on the upper end of plunger all the time, and the other end then is connected with check lock lever, and reed is upwards dialled check lock lever, break away from the groove of lower handle, and make the other end of connecting plate be pressed in the top of plunger all the time.Close when being incorporated into operate as normal at pot cover, the plunger of multi-functional easing valve overcomes the elastic force jack-up connecting plate of reed under steam pressure, force check lock lever to insert in the groove, reach the purpose that pot cover can't be opened, after steam pressure is eliminated, under the effect of reed, check lock lever is transferred to from groove, can open pot cover, because the utility model adopts reed to handle connecting plate and check lock lever, thereby solved problem, made locking mechanism more safe and reliable by the poor reliability that operated by weight brought.

For when pressure limiting valve is malfunctioning, multifunction valve can play safety effect, spring of cover on the plunger in the utility model, and have a cross-drilled hole that communicates and vertical core in the lower end of plunger, when pot inner pressure closes on dangerous values, plunger overcomes spring force by further jack-up, makes vertical core, cross-drilled hole and the interstitial row of gas by the lower end in the pot to the space, has played the pressure release effect; When value out of danger, spring forces plunger to move down, and makes cross-drilled hole and vertical core break away from the gap, is hedged off from the outer world, and makes multi-functional easing valve play the effect of pressure limiting valve, and has solved the defective that adopts the replacing inconvenience that fuse sheet brought.

Below with reference to accompanying drawing the utility model is described in further detail.

Fig. 1 is the profile of a kind of concrete structure of the present utility model when being incorporated in the pass.

Fig. 2 is that multi-functional easing valve of the present utility model closes the concrete structure longitudinal sectional drawing that closes when not in place.

Fig. 3 is the structural representation of location-plate of the present utility model part when being incorporated in the pass.

Referring to Fig. 1, multi-functional easing valve (21) is packed on the pot cover, check lock lever (19) is housed in the upper handle (18), reed (20), removable pin (23) and connecting plate (22), fluted on the lower handle (24), connecting plate (22) left end is pressed in the top of multi-functional easing valve plunger (7) all the time, check lock lever (19) does not have to press and be not related to when covering in pot and contracts all the time in upper handle, overcoat (4) is by holder (9), sealing gasket (3) and nut (11) orientation are packed on the pot cover (6), location-plate (14) is equipped with in interior cover (1) lower end, torsion spring (5) is equipped with in the upper end, in the interior cover plunger (7) is housed, spring (2) is sleeved on plunger (7) and goes up (referring to Fig. 2).Close not in place and when being heated, steam is discharged by the cross-drilled hole (13) of overcoat (4), the cross-drilled hole (12) of interior cover (1), the endoporus gap of end cap (6) in the pot when pot cover closes, a pot internal gas pressure can not get rising; When pot cover closes when being incorporated into the position and being heated, the pot cover retaining head (25) that puts in place fixes, location-plate (14) is stirred by outstanding (26) of pot body, interior cover (1) overcomes the power of torsion spring (5) and rotates, make cross-drilled hole (12) obstructed with (13) dislocation, pot is heated and begins immediately to boost, steam jack-up plunger (7), and promote to move on connecting plate (22) left end, right-hand member moves down, overcome the resistance of reed (20), make check lock lever (19) fall to embedding in the groove (24) of lower handle (17), upper and lower handle forms self-locking.As long as vapour pressure greater than 5KPa is arranged in the pot, plunger (7) just can not fall, and check lock lever (19) moves on not, and pot cover just can not be unlocked.Eliminate when pot inner pressure, plunger (7) falls, and check lock lever (19) is deviate from from groove (24) under the effect of reed (20), and in the withdrawal upper handle (18), pot cover can be opened.

Malfunctioning at pressure limiting valve, when pot inner pressure reaches 150 ± 20KPa, the resistance that plunger (7) overcomes spring (2) continues to rise, and cross-drilled hole of its lower end (15) and vertical core (16) make in the pot to communicate with atmosphere, thereby one-level safety effect (with reference to Fig. 2) is played in pressure release.

Claims (5)

1, a kind of pressure cooker open and close cover safety control, it is by the easing valves of using that are fixed on the pot cover more, be packed in the locking mechanism in the pressure cooker cover upper handle and have groove and be packed on one's body lower handle of pot and form, how having one with easing valve can go up, mobile down plunger, locking mechanism has the connecting plate of band fulcrum, the one end is pressed on the plunger all the time regularly, it is characterized in that: use the overcoat (4) of easing valve (21) to be fixed on the pot cover (10) more, there is interior cover (1) in the overcoat, the two ends of torsion spring (5) are separately fixed on overcoat (4) and the interior cover (1), under the situation of no moment of torsion, the cross-drilled hole (13) of overcoat (4), in the cover cross-drilled hole (12) of (1) and interior cover (1) communicate with gap (8) between the plunger, gap (8) then is communicated with atmosphere, on interior cover (1), fix a location-plate (14) by overcoat (4), the other end of location-plate makes cross-drilled hole (12) the cross-drilled hole dislocation of overcoat (4) relatively of interior cover (1) under the effect of pot body outstanding (26).

2, pressure cooker open and close cover safety control according to claim 1, it is characterized in that: the keyed end of connecting plate (22) connects a check lock lever (19), it be fixed in the upper handle (18), and produce and to make reed (20) connection of dialling its groove (24) from lower handle (17).

3, pressure cooker open and close cover safety control according to claim 1 and 2 is characterized in that: the lower end of plunger (7) has vertical core (16) and the cross-drilled hole (15) that is connected, and is with spring (2) on the plunger.

4, pressure cooker open and close cover safety control according to claim 3 is characterized in that: overcoat (4) is to be fixed on the pot cover (10) by sealing gasket (3), holder (9) and nut (1).

5, pressure cooker open and close cover safety control according to claim 4 is characterized in that: the upper end of interior cover (1) installs an end cap (6), and its endoporus and plunger (7) form certain the air gap (8), communicate with atmosphere.

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